Just recently got an AC15CC. I had an AC30CC a while back and it was way too loud for my needs, but I loved the tone. So, I picked up the 15 and almost immediately regretted it. Then, I decided to open it up and clip the bright cap. Best 10 minutes I ever spent. The amp sounds great now, much smoother, doesn't fizz out my pedals and the treble control is now usable. If you own any of the CC series, taking out that bright cap is a HUGE improvement. You don't even need a soldering iron, you can just clip it out.